European travel descended into chaos as a second wave of snow and sub-zero weather conditions swept as far south as Italy, paralysing airports, motorways and public transport. Hundreds of flights to and from Europe's busiest airports were cancelled and millions of passengers left stranded in France, Germany, Belgium and Scandinavia as airports closed or faced severe delays. Thousands spent the night in terminals as blizzards continued and authorities struggled to clear snow from runways and cope with high winds. Meteorological offices predict little respite from arctic conditions, with more heavy snow from midday until midnight expected this week.